BLD: bring back build_ext warning message cython is missing #2439
TST:  Don't segfault when categorical groupby differs in length from series, GH3011
BUG: add length check on categorical grouper, GH3011
TST: df.from_records should accept values deriving from ABC collection.Mapping
ENH: df.from_records should accept values deriving from ABC collection.Mapping, GH3000
TST: add tests for Period().to_timestamp(tz=foo), GH2877
ENH/BUG: add tz argument to to_timestamp of Period, GH2877
TST: add bounds-checking preamble to groupby_X cython code
ENH: add bounds-checking preamble to groupby_X cython code
TST: Enforce grouper=f() result has len(labels) == len(data) GH3035
BUG: Enforce grouper=f() result has len(labels) == len(data) GH3035
DOC: Update v0.11.0.txt
ENH: Allow setitem in a frame where only mixed numerics are present (e.g. int and float) GH 3037

CLN: minor change in _consolidate_inplace (check if consolidated first, so that we can cheaply call this)
BUG: Handle concat of series with same name, GH2972
ylabels for secondary_y axis

modified Selective Plotting on Secondary Y-axis example to show how to set ylabels for both left and right y axis
BUG/ENH: guarantee blocks will upcast as needed, and split as needed
         e.g. a replace on an IntBlock with a float will upcast, it may
         yield multiple blocks if the original IntBlock didn't fully replace

         small fix in com.mask_missing to guarantee that a bool ndarray is
         returned even in the case of a string comparison with a numeric array
         (which for some reason numpy returns a single, non-ndarray value)

BUG: py3 issue in com._maybe_promote for recognizing string types on number like dtypes!
cython dependency and a pip tip

Some advice that would've helped me when I was first trying to get the development version working.
ENH: _maybe_upcast_putmask now has the keyword, change to provide inline
       putmask changes to an object (series)
     apply in BlockManager now has a keyword, filter to allow acting
       on only those items contained in the filter (if supplied)
CLN: consolidated all replace subs to main replace in DataFrame
       (which calls replace in BlockManager)
TST: now passed test in GH 3064
BUG: add sanity check to groupby agg function, outside main loop
BUG: fix scalar date_parser issue in read_csv. close #3071